package com.kaifamiao.jdbc.d0908;

public class Demo {

    public static void main(String[] args) {
        isNull(1);
        isNull(null);

        ObjectUtil.isNull(args);

    }


    public static void isNull(Object obj){
        if (obj == null){
            println("is null");
        } else {
            println("not null");
        }
    }
    public static void println(Object out){
        System.out.println(out);
    }
}
